The complete guide
Chain Door Fly Screens, A Practical Buyer's Guide
The problem with an open door
Warm weather creates a small, annoying trade-off. Leave the back door shut and the kitchen turns into an oven. Leave it open and within ten minutes you have flies over the fruit bowl, a wasp circling the bin, and a moth doing laps of the ceiling light.
Most of the usual fixes are worse than the problem. Fly spray is unpleasant and you are breathing it in. A mesh screen door is a real job to install and costs real money. A plastic strip curtain goes yellow and sticky after a season. Which is why chain curtains have quietly stuck around in kitchens, workshops, farm buildings and shopfronts for decades. They are the plainest solution available, and they work.
How a chain fly screen actually works
A chain door curtain is rows of metal chain hung side by side across the doorway. The chains sit close enough that there is no clear flight path through the gap, but loose enough that a person pushes through without effort.
Insects respond badly to that combination. They approach a doorway, find a moving, reflective obstacle rather than a clear opening, and most of them give up and go somewhere else. It is not a sealed barrier, and nobody should claim otherwise. A persistent fly will eventually find a way in. But the volume of insect traffic drops a lot, which is usually all you actually need.
Meanwhile the air keeps moving. That is the part a closed door cannot give you. A kitchen with a chain screen in the doorway stays noticeably cooler than one with the door shut, and you still get the cross-breeze from the front of the house.
Why aluminum
This screen uses aluminum chain. There are a few reasons that is the right material for a doorway.
It is light. The whole curtain comes in at 3.61 kg, which is well within what a normal doorway fixing can carry. A heavy steel version of the same thing would put real strain on the frame and would be a two-person job to hang.
It resists corrosion. Doorways are damp places. Rain blows in, kitchen steam condenses, and if you live near the coast there is salt in the air. Aluminum does not rust the way steel does, so the chains hold their look rather than streaking.
It holds its color. The finish is silver and plain, which is part of its appeal. It does not try to be decorative. It sits beside aluminum window frames, stainless kitchen fittings and bare workshop walls without looking out of place.
One thing to be clear about: the product is listed as not water resistant. That refers to the screen as a whole, not the chains rusting. A chain curtain has gaps by design, so rain passes straight through it. It is an insect and airflow product, not a weather shield.
Who it suits
Households with a back door that stays open from spring to autumn get the most out of it. If you are forever shouting at someone to shut the door, a chain screen removes the argument entirely. There is nothing to shut.
Pet owners do well with it too. A dog that wants in and out twelve times a day will learn to push through the chains in a day or two, and you stop being the doorman. This is one of the better pet friendly fly screen setups for exactly that reason.
Small businesses use them heavily. Cafes, takeaways, butchers, garden centres and workshops all have doorways with constant foot traffic where a swinging door is a nuisance. A chain drape stays open, stays tidy, and keeps the flies down around food and bins.
Then there is the indoor use. The listing mentions room division, and chain curtains do that job nicely. A wide internal opening between a kitchen and a prep space, or a utility area you want screened without a wall, suits a chain drape better than a fabric curtain because it does not trap steam or smells.
Getting the fit right
Measure before you order. Width first, then the height from the fixing point down to the floor. Write both down.
The good news is that this screen adjusts in both directions. Individual chains can be removed to narrow the curtain for a smaller opening. The drop is set by buckles along the chains, so you add or remove them to get the length you want. What you cannot do is make it wider than it is, so measure honestly and round up rather than down.
For length, aim for the chains to just brush the floor. Too short and insects come in under the bottom edge. Too long and the chains pile up and drag, which looks untidy and wears the ends. A centimeter or two of contact is about right.
The closure type is hook and loop, so there is no bracket kit to puzzle over. Do check what the surface above your door is made of, though. A solid timber frame is straightforward. Crumbling plaster or a hollow panel needs a bit more thought about how you anchor it.
Living with one
The honest truth is that after the first week you stop noticing it. That is the highest praise a doorway product can get.
There is a soft metallic sound when the chains move, either from a breeze or from someone walking through. Most people find it pleasant. In a very exposed, windy doorway it will be more noticeable, and a shorter drop reduces the swing.
Walking through takes no learning. You approach with both hands full, the chains part across your forearms, and they settle behind you. Children work it out instantly. Older visitors sometimes pause the first time, then do not think about it again.
Keeping it clean
Chain curtains need very little, but a kitchen doorway is the exception. Cooking grease drifts out through the opening and settles on the chains, and after a few months you will feel the difference.
A damp cloth with mild soapy water, run down each chain, sorts it out. Dry with a soft towel afterwards so you do not leave water marks. Skip abrasive scouring pads and harsh solvents, since those can mark the finish with no real benefit.
Every so often, check the fixing and run your eye along the chains. If one has slipped or a buckle has loosened, re-seat it before it drops. That is the whole maintenance list.
If you take the screen down for winter, do not fold it tight. Hang it in a shed or coil it loosely in a box, so the links do not kink and the curtain hangs straight when it goes back up.
What it will not do
Worth saying plainly, because expectations matter.
It will not stop every insect. It is a deterrent barrier with gaps by design, and something determined will get through eventually. It will not keep rain out, since it is listed as not water resistant. It will not black out a room, though it does break up direct light. And it will not filter fine dust, even though it catches some of the larger drifting stuff.
If you need a sealed insect barrier, you want a hinged mesh screen door. If you need weather protection, you want a door. A chain curtain sits in the gap between those, and for most people that gap is exactly where the need is.
The short version
If your door stays open in summer and the flies have noticed, a chain door fly screen 39x89 is a cheap-to-live-with fix. Aluminum keeps it light at 3.61 kg and resistant to corrosion. The width adjusts by removing chains and the length by changing buckles, so it suits openings that are not quite standard. Hook and loop fixing keeps installation simple.
Measure your doorway, check the frame above it, and be realistic about what a chain screen does. Get those three things right and it will hang there doing its job for years without asking anything of you.